In order to systematically analyze land use change and its impact on water ecosystem services in Hanjiang River Basin un-der different SSPS scenarios from 2012 to 2032,FLUS and InVEST models were used to compare and analyze the land use change and its impact on water ecosystem services under SSP1 and SSP3 scenarios.The results showed that the range of land use change was small because of reasonable land use planning and management in the SSP1 scenario.In the SSP3 scenario,due to the low level of so-cial and economic development and the high population growth rate,the range of land use change was large.The change of land use type was mainly reflected in the increase of construction land and water area,and the decrease of forest land,cultivated land and grassland area.The evaluation of water production services and water purification services showed that the depth of water production was generally higher than that in 2012,and the load of nitrogen and phosphorus was generally lower than that in 2012,indicating that land use change had a distinct impact on water ecosystem services.The results of remote sensing ecological index(RSEI)were consis-tent with the trends of water production services and water purification services,which confirmed the impact of land use change on water ecosystem services.In conclusion,the stepwise regression model analysis revealed a variety of factors affecting water ecosystem services,among which land use type,precipitation and temperature were the main factors.These results provided scientific basis for land use planning and water ecosystem service management in the Hanjiang River Basin,and provided reference for the formulation of sustainable development strategies in other similar basins.
关键词
汉江流域/土地利用变化/水生态系统服务/遥感生态指数(RSEI)
Key words
Hanjiang River Basin/land use change/water ecosystem service/Remote Sensing Ecological Index(RSEI)
维普
万方数据